one's inherent nature

original text of a book etc., source / base text (text against which other texts are revised, translated, published, etc.)

head temple / this temple

translator

日本鰻: Japanese eel

secondhand books

the real thing (of an event or action); getting serious / (entertainment) performance or (actual) recording (as opposed to a rehearsal)

a Japanese hare (Lepus brachyurus)

foundation, basis, basic fundamentals

(publishing, printing) folio (large book made from sheets of Mino washi paper folded in half)